| Milkfat | Not less than 99.6 percent | Not less than 99.8 percent. | 
            
                | Moisture | Not more than 0.3 percent | Not more than 0.1 percent. | 
            
                | Other butter constituents including salt | Not more than 0.1 percent | Not more than 0.1 percent. | 
            
                | Salt | Not more than 0.05 percent | Not more than 0.05 percent. | 
            
                | Antioxidants | Those permitted by standards of the Codex Alimentarius Commission and authorized for use by the Food and Drug Administration | Those permitted by standards of the Codex Alimentarius Commission and authorized for use by the Food and Drug Administration. | 
            
                | Free fatty acids | Not more than 0.5 percent (calculated as oleic acid) | Not more than 0.3 percent (calculated as oleic acid). | 
            
                | Peroxide value | Not more than 0.1 milliequivalent per kilogram of fat | Not more than 0.1 milliequivalent per kilogram of fat. | 
            
                | Iron content | Not more than 0.2 ppm | Not more than 0.2 ppm. | 
            
                | Copper content | Not more than 0.05 ppm | Not more than 0.05 ppm. |